err("Ioctl/1.1b failed: %m\n");
if (ioctl(nbd, NBD_SET_BLKSIZE, (unsigned long)blocksize) < 0)
err("Ioctl/1.1c failed: %m\n");
err("Ioctl/1.1b failed: %m\n");
if (ioctl(nbd, NBD_SET_BLKSIZE, (unsigned long)blocksize) < 0)
err("Ioctl/1.1c failed: %m\n");